The electric control system is the key part of every canvas sewing machine. It is generally composed of a control subject, a control object, and a sensing part, and specifically includes a control box (controller, driver), a motor and an electromagnet, a sensor, and some auxiliary components. The cooperation and linkage of some mechanical parts of the thick-thread sewing machine have contributed to the automation of the sewing machine. Just like the "core" of a powerful computer, the "core" is like the heart of a person. It can make all parts work together and enhance the automation of machinery. The control part of the electronic control system mainly controls the driving operation of two components such as the motor and the electromagnet.
Thread jumping is a phenomenon that the industrial canvas sewing machine cannot continuously form stitches because the hook at the bottom of the machine cannot hook the upper thread or the upper thread slips off after being hooked during the sewing process of the industrial canvas sewing machine. This is mainly caused by the inconsistency of the movement time or movement position of the needle and the hook. Of course, it is also possible that the needle cannot form a loop and cause the stitches to skip. If there is a jumper, you can find the reason from the following aspects:
When we encounter skipped stitches on canvas sewing machines, we usually check the following points to determine the cause and fix it.
1. When sewing with a canvas sewing machine, the end of the bottom thread is too short to cover the bottom thread, so before working, we need to take out the shuttle and pull out the bottom thread by about 10 cm.
2. The needle of the canvas sewing machine has been used for a long time and improper maintenance will cause changes in parts and components, which cannot meet the sewing requirements. The position of the needle bar should be replaced as needed, and the distance and gap between the needle and the tip of the rotary hook should be adjusted.
3. The foot slot of the canvas sewing machine is too wide. When the card clothing leaves, the movement of the sewing material will affect the coil. At this time, the feet must be moved to the left and right according to the sewing fabric.
4. Check whether the presser foot is installed too high and whether the cloth feeding speed is too fast. If the presser foot is installed too high, the strength of the presser foot to press and feed the fabric will be insufficient. At this time, the fabric will vibrate with the presser foot, so that the upper thread cannot be pressed tightly to form a loop. The upper thread is quickly taken away with the fabric, and the hook cannot catch the upper thread.
Sewing Thread Questions
(1) Check whether the sewing thread is too thick, uneven in thickness, or the texture of the thread is too soft.
(2) Check whether the tension of the upper thread is too tight. If the upper thread tension is too tight, the needle loop formed under the machine is too small for the hook to pick up.
I hope the above knowledge about skipped stitches on canvas sewing machines can help you quickly solve the problem of skipped stitches on canvas sewing machines. If you have any questions, you can contact us. We also have Jeans Sewing Machine on sale, please consult us if you are interested.
